Hook



May 21 1935, G. HALL Er AL 2,001,959

' Hoox Fueq June 29, 1934 Snecma/lg Patented May 2`, 1935 Ourinventionirelates 'to that classV of hooks,

commonly known-asffsnapihooks, in which afretainingI member sucht as `arspring= is n provided for preventing the disengagement of saidlliookfrom fa-rmembertswhich ity isi-attached. .j

Hooks of'{thisf type are'v especially#adaptabley fonu'se-in'connexetiorrwithJ chains, such "asf antiskid for automobiles, andwhenused on such devices it is especially desirable to havethesefhooksi* as shortk as possibleandstillhave them so that thel chain-v can beeasily-disengaged 'therefrom with one hand and without the necessity ofusing thethumb to force down the retaining member; such as now necessaryon hooks of this type in common use from which it is very diicult toremove the chains, due to the fact that this has to be done generally incold Weather when the operators hands are cold and, therefore, the hookscannot be readily manipulated.

An object of our invention is to provide a hook of the characterdescribed into which a member, such as a chain link, may be easilysnapped and when desired, disengaged therefrom by a simpleoperation'without the necessity of operating the retaining member ofsaid hook.

A further object of our invention is to provide such a hook which can bemade extremely short in length and still be easily operatable for theengagement of a member therein and the disengagement of said membertherefrom.

A further object of our invention is to provide a connecting hook whichcan be economically constructed and which is durable aswell as simple tomanufacture.

As illustrated in the drawing:

Figure l is a plan view of our improved hook.

Figure 2 is a side view of the same.

Figure 3 is a view in cross section on line 3-3 of Figure 2.

Figure 4 is a plan View of the same illustrating the use of our hook andas attached to a chain.

In said drawing, our invention is shown as constructed in the form of adouble hook from the bar 5 which is blanked from a piece of sheet metal.The said bar is bent over at each end to provide hook portions 6 and 'Iseparated by a shank portion IE. The hook portion 'I being preferablywider than the portion 6 in .order to conform substantially to the formof anti-skid 0 chains, wherein the hook 'I is engaged with thecircumferential chain member-and the hook 6 vwith the cross chain memberof the said chains.

'Ihe retaining member 8 is provided in the form of a at spring havingends 9 and I positioned respectively with relation to the hooks 6 and 1,

'and IIl extend to a position a substantial disandsaid member is securedtothe shank. IB. by means of a'rivet I`I which has aheadl2"th`at isadapted to` overlap 4the sidesof' the `retaining member land theshanklso as to. prevent,

displacement of said' member 8by rotation on` 5- said shank. This rivetextends thru a hole' in the retaining Vmember and the head of said rivetis made sumcientlylarge in order toY cover-asubstantial portion ofthearea` aroundI said1 hole i and thus preventbreakagewhiclihasbeenfound10* Veryflikely'tooccur ati thecenterof said retain-5` ing member whenthey are otherwise fastened.

It will be noted that the ends of the springs 9 tance inside of the endof the hooks thus forming an overlying hook arrangement. This is toprovide for. the easy engagement of a member in the hook; which can beaccomplished by simply hooking such member on to that portion of thehook between its end and the retaining spring and then pulling on themember to force it past the retaining spring and into the hook.

The said retaining springs are curved towards the end of the overlyinghooks and are also tapered, as at I3 to a point Ill` at one side of thespring which forms a cam surface, to provide a wedge shaped passage I5for permitting the link to be easily disengaged from the hook by simplytwistingthelink to av crosswise direction with respect to the hook, asillustrated in Figure 4 of the drawing, and pulling side ways on thelink thus wedging the spring downwardly and permitting passage of thelink thru the passage I5.

It can be readily seen from the above description that, by theirinvent,ionv applicants have provided a hook having a flat retainingspring member with its `free end' forming apcam by means of which thesaid retaining spring is forced away from the hook and towards the shankby a simple transverse movement of a link member.

We claim: l 1. A hook of the character described for the interconnectingof link members comprising a shank portion, a retaining membercomprising a longitudinally extending spring mounted on said shankportion andcurved to extend with the end thereof in rear relation to theend of said hook, the said extending portion having its free end formedto provide a cam portion transversely disposed with respect to saidretaining member whereby said member will be forced in a directiontowards said shank portion upon the movement of a link member acrosssaid cam portion.

2. In combination with a hook of the character described comprising'ashank portion; a longitudinally extending retaining member comprising aspring secured on said shank portion and having its end extendingsubstantially perpendicularly towards and near the end of said hook, thefree end of said spring being formed to provide a transverse flaredpassage between the same and the end of said hook whereby, upon movementof a member thru said passage, contact between said member and said freeend will cause movement of Ysaid spring in a direction away from the endof said hook and towards said shank portion.

3. A hook of the character described comprising a shank portion, aretaining member comprising a spring having its end curved upwardly fromsaid shank portion towards the end of said hook and extending partlywithin said hook and in near relation with the end thereof, the free endof said spring being formed to provide a transverse flared passagebetween the same and the end of said hook.

4. In combination'with a hook of the character described comprising ashank portion, a retaining member comprising a thin elongated bar -ofspring material having its end formed at an angle and curved in adirection towards the end of said hook; said retaining member beingrigidly secured toV said shank portion in a manner whereby .the free endthereof willbe disposed in substantially close relation to the end ofsaid hook.

5. A fastening device of the character described comprising a shankportion, a spring retaining member rigidly secured to said shank portionand curved upwardly therefrom; and an overlying hook portion spaced fromthe free end of said member, the edge of said free end disposeddiagonally to said member whereby a ared passage is formed between saidoverlying hook portion and said member.

6. A fastening device of the character described, comprising a shankportion, a spring retaining member rigidly secured to said shank portionhaving a free end curved upwardly therefrom, a hook overlying the freeend of said member and spaced therefrom, the edge of said free end beingformed to provide a cam portion transversely disposed with relation tosaid retaining member.

7. A device of the character described comprising a shank portion,having a hook formed at each end thereof, a retaining member comprisinga spring having the edge of the free ends thereof forming a cam portion;the said ends being curved upwardly from said shank portion andextending partly within said hooks and substantially close thereto withthe edges thereof transversely disposed with relation to said retainingmember.

GEORGE W. HALL. l CHAUNCEY C. BARTON.

